Variable-speed mechanism.



B. M. W. HANSON. VARIABLE SPEED MEGHANISM.

APPLIQATION mman MAR.19, 1907,

Patented Dee. 1, 1908.

2 SHEETS-SHEET 1.

im? I B. M. W. HANSON.

907' Patented Dee. 1, 190s.

2 SHEETS-SHEET 2.

` son', a citizen ot Sweden, residingat Haro' UNITED srazr'ns ramene ernten.

eimer M, W. treason, or marrone, conneofrroor, lesiones ro PRATT a warmer Vconrriw, or marron@commencer, i. coeronirrior or New meent.,

VARIABLE-@PEED MEGBANISM'.

SHQ. 905,519.

Bpeoication of Letter Patent.

Fatentod Iee. 1, .1908.

',Ap'plionti'on led latch 19, i907. tiesto), He. 363,296

To all whom 'it may concern:

Be 1t known that 1, Ben-rrr M. 1V. HA

ford, in the county of VHartford and State of Connecticut, havejnvented certain new and usei'ul Improvements in Variablepeed Mechanism, of which the following 1s specification.

This invention relates to variablespeed gearing involving improved clutch-actuating mechanism, and has for its object the provision of a simple device by means of which a series o' clutches may be perfectlyl controlled by a shaft rotated in any desired manner.

'Other objects of the invention will be set forth in. the following description.

ln the accompanying drawin s, Figure 1 is a sectional view ols the spin le, driving-' 2( shaft and intermediate change-gear shafts ot a metal-Working or other machine, the line ot section being an assumed one for the i purpose of providing a comprehensive illus tration. Fig. 2 is a perspective view showing the relative position of a camshaft to one of the intermediate gear-shafts.

Refcrringito the drawings, the numeral 1 designates the spindle, 2 the drivingshaft carrying a pulley 2, and 3 and t the' intermediate shafts. uKeyed or pinned to shaft 2 are i'our gearsr, 6, 7 and 8 of different diameters adapted to mesh with variable gears 9, 10, 1l and 12, respectively, 4which gears are'loosely mounted on shaft 3,

Between gears 9 and 10, 11 and 12 is mounted cimeli-mechanism 13 and 14, reepectively, shown as of the friction-ring va riety, although it may be of any suitable kind, and adapted to be operated by shiftable sleeves 15 and 16 mounted on the Adjacent to shaft 3 is a shaft 17 havingr mounted thereon a pair of cams 18 and 19, Agroot/ed to receive roller-studs 20, 2l, respec- V tively, which 'project from the short arms 22 and 23 of lorlled elutchoperating levers 24'., 25 pivoted at 26 and 27 to any suitable support not shown). Carmgrooves 28, 29 are osuc contour that on one revolution of the canbshatt 1'?, said cams will shift the lgears 33 and 34, respeetivel drivingshaft 2 to said gear-shaft 3, and that' any' of the four eombinations maybe rea@ ily established by turning the cam-shaft 17, for which purpose a crank-.handle 30 is shownsecured to the end thereof, although it is distinctly to be understood that other means may be employed for actuating said cam-shaft Without departure from the in vention.

Adjacent to one end of shalt 3 are keyed ferent speeds may be transmitted from the l or pinned two gears 31 and 32 of different diameters and in mesh with these gears are y which are loosely mounted on shaft Il. luteh-mechanism 85 is provided between gears 33 and 34 by means ot' which either gear may be clutched to shaft 4 as desired. By this arrangement of gearing provisionis made whereby two speeds may be transmitted to shaft from each speed of shaft 3, thus making eight different speeds available for shaft Il.

Two gears 36 and 37 are rigidly mounted on spindle 1, the latter being in mesh With a gear 38 loosely mounted on shaft fl, and

the `former with an intermediate gear 36 which is in mesh with ear 39,*a1so loosely mounted on Shaft 4. C umh-mechanism 4;0 is mounted on shaft Il between gears 38 and 39, so that either ot said gears may be made rigid with shaft l by shitting said clutch a0. Spindle 1 is caused to. rotate in one direction by gear 38 and in the other direction b gear 39. Each of the eight different spec s of shaft l may be converted in transmission to the spindle,-into the proper relative speed for said spindle.

As is obvious the part 1 ma be a solid shaft instead of a chuck-spinal e as shown.

Se too changes may be made in. the propon' tions or sizes of the gears and in the character thereof,the invention 4not being limited to the toothed gearin illustrated.

Having thus described t ie invention, What .l claim isw The combination of a rotary driving shaft having at least tour gears fastened thereto and of different diameters, an intermediate shaft havingr four gears loose thereon, also of diierent diameters, arranged in pairs andA meshing with said lirst mentioned gears, respectively, clutch-members fastened to said intermediate shaft and arranged to clutch any one ot' said fourloose gears to said intermediate shaft, a pair of gears of dii'erent diameters' fastened to saidrintermediate'shaft, a second intermediate shaft, a`pair of gears looseon the second'intermediate shaft, meshing with the (pair of gears, respectively, which are fastened to said lirst intermediate shaft, both said y last Amentioned pairs of gears being of ditferent diameters, a clutch member fastened to said second intermediate shaft and ada tedV to alternately clutch the last mentione pair of loose gears to saidV second intermediate shaft, two gear trai-ns one of which has onemore gear than the other-fand ,c iistituting an idler, the primary gears Qsai trains 'being loose on the second intermediate shaft, a spindleto hich the 'malgears of vsaid tramsyare"fastened, and

a-clutcl' member for alternately clutchingl the primary gears of said trains to said sec-f ond,intermediate shaft.

In testimoiiy'. whereofl `aiix my signature in presence of two'witnesses.

Witnesses F. E. ANDERSON,

FRANCES E. BLODGETT. 

